"Senior North Korean Foreign Ministry official Jong Tong Hak poses before an interview with APTN in London, Tuesday, Nov. 3, 2015. North Korea says the United States needs to end its ""nuclear blackmail"" and respond to Pyongyang's recent diplomatic overture to formally end the decades-old Korean conflict. Fighting ended in 1953 without a peace treaty, leaving North and South Korea still technically still at war. (AP Photo/Kirsty Wigglesworth)"